Combination tool



FIG. 1 is a perspective view of my design;

FIG. 2 is a front view;

FIG. 3 is a left side view;

FIG. 4 is a top plan view;

FIG. 5 is a right side view;

FIG. 6 is a bottom view;

FIG. 7 is a rear view; and,

FIG. 8 is a front view without a cover. 

The ornamental design for a combination tool, as shown and described. 